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authorLinus Torvalds <torvalds@linux-foundation.org>2021-09-26 20:09:20 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-26 20:09:20 +0300
commit5bb7b2107f8c8e97750a36a723f3f74f819f6ff1 (patch)
treea721a3a54b7fa24aa9083671d44a94b3a8c2481d /tools/arch/x86
parent3a398acc56dd7592eba081ce1ea356151ab90e2d (diff)
parent5ba1071f7554c4027bdbd712a146111de57918de (diff)
downloadlinux-5bb7b2107f8c8e97750a36a723f3f74f819f6ff1.tar.xz
Merge tag 'x86-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner: "A set of fixes for X86: - Prevent sending the wrong signal when protection keys are enabled and the kernel handles a fault in the vsyscall emulation. - Invoke early_reserve_memory() before invoking e820_memory_setup() which is required to make the Xen dom0 e820 hooks work correctly. - Use the correct data type for the SETZ operand in the EMQCMDS instruction wrapper. - Prevent undefined behaviour to the potential unaligned accesss in the instruction decoder library" * tag 'x86-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/insn, tools/x86: Fix undefined behavior due to potential unaligned accesses x86/asm: Fix SETZ size enqcmds() build failure x86/setup: Call early_reserve_memory() earlier x86/fault: Fix wrong signal when vsyscall fails with pkey
Diffstat (limited to 'tools/arch/x86')
-rw-r--r--tools/arch/x86/lib/insn.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/arch/x86/lib/insn.c b/tools/arch/x86/lib/insn.c
index c41f95815480..797699462cd8 100644
--- a/tools/arch/x86/lib/insn.c
+++ b/tools/arch/x86/lib/insn.c
@@ -37,10 +37,10 @@
((insn)->next_byte + sizeof(t) + n <= (insn)->end_kaddr)
#define __get_next(t, insn) \
- ({ t r = *(t*)insn->next_byte; insn->next_byte += sizeof(t); leXX_to_cpu(t, r); })
+ ({ t r; memcpy(&r, insn->next_byte, sizeof(t)); insn->next_byte += sizeof(t); leXX_to_cpu(t, r); })
#define __peek_nbyte_next(t, insn, n) \
- ({ t r = *(t*)((insn)->next_byte + n); leXX_to_cpu(t, r); })
+ ({ t r; memcpy(&r, (insn)->next_byte + n, sizeof(t)); leXX_to_cpu(t, r); })
#define get_next(t, insn) \
({ if (unlikely(!validate_next(t, insn, 0))) goto err_out; __get_next(t, insn); })